Air-cooled battery pack

Abstract

The utility model discloses an air-cooled battery pack which comprises a shell, three battery modules are arranged in the shell at equal intervals, the bottom surfaces of the three battery modules are jointly connected with a hollow plate, the hollow plate is fixed on the bottom wall of the shell, the two sides of the hollow plate are respectively communicated with an air inlet pipe, and the two air inlet pipes respectively penetrate through the two sides of the shell. A heat dissipation plate is jointly attached between every two battery modules, an air cavity communicated with the hollow plate is formed in each heat dissipation plate, a U-shaped air pipe communicated with the air cavity is jointly fixed to the top faces of the two heat dissipation plates, an air outlet is formed in the end face of the U-shaped air pipe, the shell is movably connected with a cover plate, the top face of the cover plate perpendicularly penetrates through a countersunk head groove, a fan is arranged in the countersunk head groove, and the cover plate is movably connected with the shell. A connecting pipe is fixed to the bottom face of the cover plate and located below the countersunk groove. According to the utility model, the bottom surface and the side surfaces of the battery module are simultaneously subjected to heat conduction, so that the heat conduction surface of the battery module is increased, and the heat dissipation efficiency of the battery module is further improved.

Description

Technical Field

[0001] This utility model relates to the field of battery equipment technology, and in particular to an air-cooled battery pack. Background Technology

[0002] Battery packs are energy storage devices that combine multiple battery modules in series or parallel to obtain a larger voltage or a larger capacity. They are widely used in electric vehicles, electric bicycles, electronic devices and other fields.

[0003] Patent publication number CN210296557U discloses an air-cooled battery pack, including a cover plate structure and a housing structure. The lower end of the cover plate structure is fixedly connected to the upper end of the housing structure. The housing structure includes a placement cavity, battery modules, and air channels. The battery modules are placed in the placement cavity, and the air channels are arranged between the battery modules. The air inlets and outlets of the air channels are arranged on the upper end of the cover plate structure. The air channels are arranged in a serpentine pattern. This design requires fewer air channels, simplifies wiring, and allows the air channels to be positioned in the middle of the housing structure, effectively carrying away heat from the battery modules located in the middle of the housing structure, reducing heat dissipation differences. Furthermore, the serpentine arrangement of the air channels increases the contact area between the air channels and the battery modules, resulting in better heat dissipation.

[0004] However, the airflow channel in this patent is located between the battery packs. The heat generated by the battery packs can only be transferred to the airflow channel through one side of the battery packs, which makes the heat conduction area of ​​the battery smaller, affecting the heat conduction efficiency of the battery packs and thus reducing the heat dissipation effect of the battery packs. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an air-cooled battery pack.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a wind-cooled battery pack, comprising a housing, wherein three battery modules are equidistantly arranged inside the housing, the bottom surfaces of the three battery modules are connected to a hollow plate, the hollow plate is fixed to the bottom wall of the housing, each side of the hollow plate is connected to an air inlet pipe, two air inlet pipes respectively penetrate the two sides of the housing, a heat sink is attached between each pair of battery modules, the heat sink has an air cavity communicating with the hollow plate, the top surfaces of the two heat sinks are fixed to a U-shaped air duct communicating with the air cavity, the end face of the U-shaped air duct has an air outlet, the housing is movably connected to a cover plate, the top surface of the cover plate vertically penetrates a countersunk groove, a fan is provided in the countersunk groove, and a connecting pipe is fixed to the bottom surface of the cover plate, the connecting pipe being located below the countersunk groove.

[0007] As a further description of the above technical solution: the top surface of the cover plate is provided with two mirror-symmetrical limiting members, the upper end of the housing is provided with a stepped groove adapted to the cover plate, the inner wall of the stepped groove is provided with two slots adapted to the limiting members, a rectangular frame is movably connected in the countersunk groove, a second dustproof net is fixedly connected in the rectangular frame, a first dustproof net is connected to the inlet end of each of the two air inlet pipes, and a wire through hole is vertically opened on the top surface of the cover plate.

[0008] As a further description of the above technical solution: the air cavity includes a U-shaped air duct disposed in the heat sink plate, the U-shaped air duct is connected to the hollow plate, a serpentine air duct is connected above the U-shaped air duct, the serpentine air duct is connected to the U-shaped air duct, and multiple heat dissipation ports pass through the front and rear ends of the housing.

[0009] As a further description of the above technical solution: the spacing between each layer of the serpentine air duct is equal to the width of the serpentine air duct.

[0010] As a further description of the above technical solution: the limiting member includes a storage groove formed on the top surface of the cover plate, a support plate is movably connected in the storage groove, a lever is fixedly connected to the top surface of the support plate, an insert is fixedly connected to the side surface of the support plate, and the insert movably passes through the storage groove.

[0011] As a further description of the above technical solution: the inner wall of the storage groove is adapted to have two sliding grooves, a slider is slidably connected in the sliding groove, the slider is fixedly connected to the support plate, and a spring is fixed between the slider and the sliding groove.

[0012] As a further description of the above technical solution: the connection method between the rectangular frame and the countersunk groove is the same as the connection method between the cover plate and the housing.

[0013] This utility model has the following beneficial effects:

[0014] Compared with existing technologies, this air-cooled battery pack, by setting a hollow plate on the bottom surface of the battery module, connecting an air inlet pipe to each end of the hollow plate, fixing a heat dissipation plate that fits against the battery module on the top surface of the hollow plate, setting an air cavity composed of U-shaped air ducts and serpentine air ducts inside the heat dissipation plate, and fixing a U-shaped air duct connected to the air cavity on the top surface of the two heat dissipation plates, conducts heat to the bottom and sides of the battery module simultaneously, increasing the heat conduction surface of the battery module, thereby improving the heat dissipation efficiency of the battery module. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of a wind-cooled battery pack proposed in this utility model.

[0016] Figure 2 This is a main sectional view of the overall structure of the casing of an air-cooled battery pack proposed in this utility model;

[0017] Figure 3 This is a side sectional view of the connection between the heat sink and the hollow plate of a wind-cooled battery pack proposed in this utility model.

[0018] Figure 4 This is a main sectional view of the overall structure of the cover plate of an air-cooled battery pack proposed in this utility model.

[0019] Legend:

[0020] 1. Housing; 2. Heat dissipation vent; 3. Air inlet duct; 4. Dustproof mesh 1; 5. Slot; 6. Stepped groove; 7. Heat dissipation plate; 8. Insert block; 9. Cover plate; 10. Pull block; 11. Wiring hole; 12. U-shaped air duct; 13. Battery module; 14. Hollow plate; 15. U-shaped air duct; 16. Serpentine air duct; 17. Air outlet; 18. Storage slot; 19. Support plate; 20. Connecting pipe; 21. Fan; 22. Countersunk groove; 23. Dustproof mesh 2. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1 to 4This utility model provides an air-cooled battery pack: It includes a housing 1, inside which three battery modules 13 are equidistantly arranged. The bottom surfaces of the three battery modules 13 are connected to a hollow plate 14, which is fixed to the bottom wall of the housing 1. Each side of the hollow plate 14 is connected to an air inlet pipe 3, which passes through both sides of the housing 1. Between every two battery modules 13, a heat sink 7 is attached. The heat sink 7 is made of aluminum alloy and has an air cavity communicating with the hollow plate 14. The top surfaces of the two heat sinks 7 are jointly fixed with a U-shaped air duct 12 communicating with the air cavity. An air outlet 17 is opened on the end face of the pipe 12. The housing 1 is movably connected to the cover plate 9. The top surface of the cover plate 9 vertically penetrates the countersunk groove 22. A fan 21 is provided in the countersunk groove 22. A connecting pipe 20 is fixed on the bottom surface of the cover plate 9. The connecting pipe 20 is located below the countersunk groove 22. The air cavity includes a U-shaped air duct 15 set in the heat sink 7. The U-shaped air duct 15 is connected to the hollow plate 14. The upper part of the U-shaped air duct 15 is connected to the serpentine air duct 16. The serpentine air duct 16 is connected to the U-shaped air pipe 12. Multiple heat dissipation ports 2 are passed through the front and rear ends of the housing 1. The spacing between each layer of the serpentine air duct 16 is equal to the width of the serpentine air duct 16.

[0023] The top surface of the cover plate 9 is provided with two mirror-symmetrical limiting members. The upper end of the housing 1 is provided with a stepped groove 6 that is adapted to the cover plate 9. The inner wall of the stepped groove 6 is provided with two slots 5 that are adapted to the limiting members. A rectangular frame is movably connected in the countersunk groove 22. A second dustproof net 23 is fixedly connected in the rectangular frame. A first dustproof net 4 is connected to the inlet end of each of the two air inlet pipes 3. A wire hole 11 is vertically provided on the top surface of the cover plate 9. The connection method between the rectangular frame and the countersunk groove 22 is the same as the connection method between the cover plate 9 and the housing 1.

[0024] The limiting component includes a storage groove 18 formed on the top surface of the cover plate 9, a support plate 19 movably connected inside the storage groove 18, a lever block 10 fixedly connected to the top surface of the support plate 19, an insert block 8 fixedly connected to the side surface of the support plate 19, the insert block 8 movably passing through the storage groove 18, two sliding grooves adapted to be formed on the inner wall of the storage groove 18, a slider slidably connected inside the sliding groove, the slider being fixedly connected to the support plate 19, and a spring being fixed between the slider and the sliding groove.

[0025] By setting a hollow plate 14 on the bottom surface of the battery module 13, connecting an air inlet pipe 3 to each end of the hollow plate 14, fixing a heat dissipation plate 7 that is in contact with the battery module 13 on the top surface of the hollow plate 14, setting an air cavity composed of a U-shaped air duct 15 and a serpentine air duct 16 inside the heat dissipation plate 7, and fixing a U-shaped air duct 12 that communicates with the air cavity on the top surface of the two heat dissipation plates 7, heat is conducted to the bottom and sides of the battery module 13 at the same time, increasing the heat conduction surface of the battery module 13, thereby improving the heat dissipation efficiency of the battery module 13.

[0026] Working principle: When in use, the fan 21 blows air upwards, and the external air enters the hollow plate 14 through the two air inlet pipes 3. The air entering the hollow plate 14 absorbs and carries away the heat from the bottom surface of the battery module 13. It then enters the U-shaped air duct 12 through the air cavity on the heat sink 7, and is then discharged outside the housing 1 by the fan 21 through the countersunk groove 22. The densely distributed serpentine air ducts 16 on the heat sink 7 reduce the speed at which the air volume is discharged from the housing 1, increase the amount of heat absorbed by the external air from the battery module 13, and improve the heat dissipation efficiency of the battery module 13.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wind-cooled battery pack, comprising a housing (1), wherein three battery modules (13) are equidistantly arranged inside the housing (1), characterized in that: The bottom surfaces of the three battery modules (13) are connected to a hollow plate (14), which is fixed to the bottom wall of the housing (1). Each side of the hollow plate (14) is connected to an air inlet pipe (3), and the two air inlet pipes (3) pass through both sides of the housing (1). A heat sink (7) is attached between each pair of battery modules (13). The heat sink (7) has an air cavity communicating with the hollow plate (14). A U-shaped air duct (12) communicating with the air cavity is fixed on the top surface of the heat sink (7). An air outlet (17) is opened on the end face of the U-shaped air duct (12). The housing (1) is movably connected to the cover plate (9). The top surface of the cover plate (9) is vertically penetrating the countersunk groove (22). A fan (21) is provided in the countersunk groove (22). A connecting pipe (20) is fixed on the bottom surface of the cover plate (9). The connecting pipe (20) is located below the countersunk groove (22).

2. The air-cooled battery pack according to claim 1, characterized in that: The top surface of the cover plate (9) is provided with two mirror-symmetrical limiting members. The upper end of the housing (1) is provided with a stepped groove (6) adapted to the cover plate (9). The inner wall of the stepped groove (6) is provided with two slots (5) adapted to the limiting members. A rectangular frame is movably connected in the countersunk groove (22). A second dustproof net (23) is fixedly connected in the rectangular frame. A first dustproof net (4) is connected to the inlet end of each of the two air inlet pipes (3). A wire hole (11) is vertically opened on the top surface of the cover plate (9).

3. The air-cooled battery pack according to claim 1, characterized in that: The air cavity includes a U-shaped air duct (15) disposed in the heat sink (7), the U-shaped air duct (15) is connected to the hollow plate (14), the upper part of the U-shaped air duct (15) is connected to a serpentine air duct (16), the serpentine air duct (16) is connected to the U-shaped air pipe (12), and multiple heat dissipation ports (2) pass through the front and rear ends of the housing (1).

4. A wind-cooled battery pack according to claim 3, characterized in that: The spacing between each layer of the serpentine air duct (16) is equal to the width of the serpentine air duct (16).

5. A wind-cooled battery pack according to claim 2, characterized in that: The limiting component includes a storage groove (18) formed on the top surface of the cover plate (9), a support plate (19) is movably connected in the storage groove (18), a lever (10) is fixedly connected to the top surface of the support plate (19), and an insert (8) is fixedly connected to the side surface of the support plate (19). The insert (8) movably passes through the storage groove (18).

6. A wind-cooled battery pack according to claim 5, characterized in that: The inner wall of the storage groove (18) is adapted to have two sliding grooves, and a slider is slidably connected in the sliding groove. The slider is fixedly connected to the support plate (19), and a spring is fixed between the slider and the sliding groove.

7. A wind-cooled battery pack according to claim 2, characterized in that: The connection method between the rectangular frame and the countersunk groove (22) is the same as the connection method between the cover plate (9) and the shell (1).

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